JPH0335455Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial Ueno field of application) This invention relates to a clamper for molds, which allows molds such as dies and molding molds to be freely attached and removed from the mounting surface on the back of the mounting material. We provide a clamper that looks like this.

(Prior Art) Large molds such as dies and molding molds are often heavy and require heavy labor to attach and remove from mounting materials. For this reason, conventionally the
−38337 Publication, Utility Model Publication No. 60-25307, Utility Model Publication
Many clampers have been proposed, such as those disclosed in Japanese Utility Model Application No. 56-23221 and Japanese Utility Model Application Publication No. 55-82134, and some are fluid pressure controlled.

(Problems to be solved by the invention) The invention aims to develop a clamper for molds that can safely remove, install, and hold the molds in factories where molds must be replaced on a daily basis. The goal is to attach the mounting material to the lower surface and to maintain the attachment by means of an elastic spring acting on a cylinder to which no pressure fluid is sent, and to remove it by applying pressure fluid to the cylinder that overcomes the elasticity of the elastic spring. This is caused by feeding.

(Means for Solving the Problems) The clamper for molds of the present invention aims to embody the above-mentioned goals, and has the following features:
A cam wall material 9 substantially perpendicular to the mounting surface 5 is fixed to the mounting material 3 having the mounting surface 5 of the mold 31 on the lower surface,
A cam groove 9a perpendicular to the mounting surface 5 and a cam groove 9b inclined diagonally outward at the lower end of the cam groove 9a are formed in the cam wall material, and a cylinder 12 is provided on the upper part of the cam wall material 9. A swinging rod 25 with a locking flange 26 is directly connected to the lower end of the first rod 19 projecting downward from the piston 18 of the cylinder 2 in a swingable manner. Mounting surface 5
A head piece 23 of the second rod 20 projects upward from the piston 18, and a pin 28 provided on the swinging rod 25 is fitted into the cam groove 9a and the cam groove 9b so as to be freely movable up and down. An elastic spring 24 whose base end is engaged with the guide tube 22 of the second rod 20 is hung on the lower surface of the rod, and the pin 28 is connected to the elastic spring 24.
When the mold 31 is moved upward by the elasticity of the cam groove 9a, the mold 31 is fixed by the locking collar 26, and the swing rod 25 is swung to the mold 31 which is brought into contact with the lower surface of the mounting surface 5. It is characterized by providing a cut groove 32a for escape.

With the above-described structure, the present invention enables the molds to be unclamped and removed by the operation of the cylinder, and the molds can be automatically clamped by releasing the cylinder operation.

(Example) The attached drawings show this example. Figure 1 is a vertical sectional front view, Figure 2 is a partially cut side view, and Figure 3 is a partially cutaway side view.
The figure is a front view of the cam wall material, FIG. 4 is a side view showing the arrangement of the present invention, and FIG. 5 is a side view of the molds and their carrier.

In Fig. 4, 1 is the base on which the lower die of the press mechanism is attached, and the guide pillars 2 protrude from the four corners.
The mounting material 3 of this embodiment is fitted in such a manner that it can be slid relative to the mounting member 3 of the present embodiment. One or both of the base 1 and the mounting material 3 are subjected to the required pressing action by means of a cylinder 4 (the base 1 is not shown).

The mounting material 3 is provided with a mounting surface 5 for the molds 31 on its lower surface, and supporting edges 6 protrude upward from both sides.

Cam wall materials 9, 9 fixed to the upper and lower frame plates 7, 8 and a box 11 with support plates 10, 10 are fixed to the upper surface of the support edge 6, and the support edge 6 and the lower frame plate 7 are fixed. , cut grooves 6a, 7a, and 10a are provided from the outside of the side surface on the support plate 10 on the left side of FIG.

The cam wall members 9, 9 stand up at right angles to the mounting surface 5, and have vertical cam grooves 9 as shown in FIG.
A cam groove 9b is provided, which is made up of a cam groove 9a and an inclined groove extending outward and downward from the lower end of the cam groove 9a, and the frame plate 8 above the box 11 is provided with a long groove 8a that matches each upper end of the cam groove 9a. A rectangular or circular depression 8b is provided at the center of the upper surface of the long groove 8a.

A cylinder 12 is installed on the upper frame plate 8. The cylinder 12 has a pressure fluid supply port 15 in the upper chamber of the piston 18, and an intake and exhaust port 1 in the lower chamber.
6 will be provided. A first rod 19 projecting downward and a second rod 20 projecting upward are attached to the piston 18, and the protrusion 13a of the hole wall of the center hole through which the first rod 19 passes through the bottom plate 13 of the cylinder 12 is inserted into the recess. 8b, and the ring-shaped lower protrusion 22a of the spring receiving plate 21 is provided on the guide tube 22 of the second rod 20 by recessing the upper surface of the hole wall of the center hole through which the second rod 20 passes through the upper surface plate 14 of the cylinder 12. Insert.
The second rod 20 is made to protrude from the guide tube 22, and a head piece 23 for a spring receiving function is screwed onto its upper end, and a strong elastic expansion spring 2 is attached to the spring receiving plate 21 and the spring receiving collar 23.
Multiply both the top and bottom ends of 4.

A swinging rod 25 with a locking collar 26 is connected to the lower end of the first rod 19 protruding from the recess 8b, and is made swingable by a shaft 27 fitted in the cam groove 9a.
The rod 25 is inserted into the cut groove 6a between the cam wall members 9, 9.
7a and 10a, the locking collar 26 is projected downward from the mounting surface 5, and the pin 28 protruding from the circumferential surface of the swinging rod 25 is inserted into the cam groove 9b at the lower end of the vertical groove of the cam groove 9a below the shaft 27. Freely move and fit.

As shown in FIG. 4, the clampers of the present invention are mounted in a large number in parallel on the support edge 6 of the mounting material 3, and the same applies to the opposite side which is not shown in the figure. 31 indicates an upper mold, and 33 indicates a lower mold. As shown in FIG. 1, the upper mold 31 has a cut groove 32a formed in the mounting edge 32, which substantially matches the lower surface of the support edge 6, to match the cut groove 6a. Lower mold 3
3 is fixed to the base 1 with screws 34 as shown in FIG. There are various types of upper mold 31 and lower mold 33, such as those for trimming presses and thermoforming machines, but their explanation will be omitted.

In this embodiment, the feed port 15 of the cylinder 12
When the pressure fluid supply from the spring 24 is interrupted, the elastic spring 24
The second rod 20, the piston 18, and the first rod 19 are pulled up by the elasticity, and the swinging rod 25 is also pulled up.
Due to the vertical cam groove 9a, the solid line in Figure 1 and the
As shown in the two-dot chain line in the figure, the locking collar 2 is perpendicular to the mounting surface 5 and parallel to the first rod 19, etc.
6, the mounting edge 32 of the upper die 31 is tightened and fixed to the mounting surface 5. That is, the above-mentioned installation is performed using the elastic spring 24.
It lasts only due to its spring elasticity.

From the feed port 15 of the cylinder 12, the elastic expansion spring 24
When pressure fluid is supplied to resist the spring elasticity of the spring, the elastic spring 24 contracts downward, the piston 18, the second rod 20, and the first rod 19 move downward in FIG. The pin 28 is inserted into the outwardly inclined cam groove 9.
Since it moves until it hits the bottom of b, the shaft element 2
The swinging rod 2 is connected to the first rod 19 by 7.
5 swings to the angle of the line connecting the centers of the shaft 27 and the pin 28 (see chain lines in Figure 1), and moves the locking collar 26 diagonally to disengage from the cut groove 32a of the upper mold 31, and Remove the upper mold 31.

Since the replacement upper mold 31 and lower mold 33 are heavy, they are transported by a transport vehicle 35 shown in FIG. 5. The lower mold 33 and the upper mold 31 are removed from the base 1 with the swinging of the swinging rod 25 and transferred onto the empty carrier 35, and then a new mold is moved on the carrier 35 and placed on the base 1. After carrying it to the top and aligning the mounting material 3 with the upper mold, the pressure fluid is expelled from the supply port 15.
In this case, the piston 18, the first rod 19, and the second rod 20 are raised by the elasticity of the elastic expansion spring 24, and the swinging rod 25, pin 28, and shaft 27 are guided by the cam groove 9a. , the movement angle shown by the chain line in FIG. 1 returns to the state shown by the solid line in FIG.

The above description only shows one example of how the present invention is used, and it is up to the operator to decide which molds to use and how to use it.

(Function of the invention) The clamper of the invention feeds fluid that generates pressure that overcomes the elasticity of the elastic expansion spring 24 into the cylinder 12, or interrupts the action of the fluid acting on the piston 18 and releases only the elastic expansion spring 24. By applying the elastic force of
7, the pin 28 and the cam grooves 9a and 9b, the swinging rod 25 swings in two ways, either at an oblique angle or vertically at right angles to the mounting surface 5. When the swinging rod 25 becomes vertical, the elasticity of the elastic expansion spring 24 The molds are tightened to be mounted or held in the mounted state, and the molds can be removed when the swinging rod 25 is at an oblique angle.

(Effect of the invention) In the clamper of the invention, a cam wall material 9 that is substantially perpendicular to the mounting surface 5 is fixed to the mounting material 3 having the mounting surface 5 of the mold 31 on the lower surface, and the mounting surface 9 is fixed to the cam wall material. A cam groove 9a perpendicular to 5 and a cam groove 9b inclined diagonally outward at the lower end of the cam groove 9a are formed.
A cylinder 12 is provided on the upper part of the cam wall material 9, and a first cylinder 12 that protrudes downward from a piston 18 of the cylinder 12 is provided.
A swinging rod 25 with a locking collar 26 is attached to the lower end of the rod 19.
are made swingable and connected at right angles, and the swinging rod 25
The locking collar 26 projects downward from the mounting surface 5, and the pin 28 provided on the swinging rod 25 is fitted into the cam groove 9a and the cam groove 9b so as to be freely movable up and down, and projects upward from the piston 18. 2nd rod 2
0, attach the base end to the lower surface of the head piece 23 of the second rod 20.
the elastic expansion spring 24 engaged with the guide tube 22 of the
The pin 28 is moved upward by the elasticity of the elastic spring 24 and is fitted into the cam groove 9a, the mold 31 is fixed by the locking collar 26, and the mold 31 is rocked against the lower surface of the mounting surface 5. The structure of the clamper for molds is characterized by having a cut groove 32a that allows the movable rod 25 to escape when it is oscillated, and the function described in the previous section is obtained.
The installation and removal of molds can be carried out very advantageously and easily using the elasticity of the elastic spring 24 and the movement of the piston 18 of the cylinder 12 against the elasticity.

[Brief explanation of the drawing]

The attached drawings show this embodiment. Figure 1 is a longitudinal sectional front view, Figure 2 is a partially cut side view, and Figure 3 is a partially cutaway side view.
The figure is a front view of the cam wall material, FIG. 4 is a side view showing the arrangement of the present invention, and FIG. 5 is a side view of the molds and their carrier. 3...Mounting material, 5...Mounting surface, 9...Cam wall material, 9a...Cam groove, 9b...Cam groove, 11...
Box, 12...Cylinder, 15...Feeding port,
16...Intake and exhaust hole, 18...Piston, 19...
First rod, 20... Second rod, 21... Spring receiving plate, 22... Guide tube, 23... Head piece, 24
... Elastic expansion spring, 25 ... Swinging rod, 26 ... Locking collar, 27 ... Shaft, 28 ... Pin, 31 ... Molds (upper mold), 32 ... Mounting edge, 32a ... ...cut groove.

Claims (1)

[Scope of utility model registration request] Mounting material 3 with mounting surface 5 of mold 31 on the bottom surface
A cam wall material 9 substantially perpendicular to the mounting surface 5 is fixed to the cam wall material 9, and a cam groove 9a perpendicular to the mounting surface 5 and a cam groove 9b inclined diagonally outward at the lower end of the cam groove 9a are fixed to the cam wall material 9. and the cam wall material 9
A cylinder 12 is provided on the upper part of the cylinder 12.
A first rod 1 protrudes downward from a piston 18 of
A swinging rod 25 with a locking flange 26 is swingably connected to the lower end of 9 at right angles, and the locking flange 26 of the swinging rod 25 protrudes downward from the mounting surface 5, and A pin 28 provided on the swinging rod 25 is fitted into the cam groove 9a and the cam groove 9b so as to be freely movable up and down, and a base end is attached to the lower surface of the head piece 23 of the second rod 20 that projects upward from the piston 18. The second
The pin 2 is engaged with the guide tube 22 of the rod 20.
8 is applied to the elastic expansion spring 24 that moves upward, and is fitted into the cam groove 9a, and the locking flange 26 is applied to the mounting surface 5.
The swinging rod 25 is attached to the mold 31 which is in contact with the lower surface of the
A clamper for molds, characterized in that it is provided with a cut groove 32a that allows the clamper to escape when it is swung.